The death rate of 1-year old children in underdeveloped countries.
D002662:Child Health Services; D006801:Humans; D007223:Infant; D007224:Infant Care; D007226:Infant Mortality; D007231:Infant, Newborn; D007239:Infections / Q000150:complications; D009017:Morbidity; D009748:Nutrition Disorders / Q000150:complications; D012959:Socioeconomic Factors